Re: Roman numerals in my number sequence

[Adam Good]

Carl thank you for the input! Unfortunately I get an error that I
don't know how to do anything with. Below is my input and output.

If you or anyone can help this would be a nice help to me. Thanks!
Adam

@@@

\version "2.12.3"

#(define sequence-number 0)

#(define-markup-command (score-sequence layout props sequence-number)
 (number?)
 (interpret-markup layout props
   (markup #:circle (number->string sequence-number))))

#(set! sequence-number (1+ sequence-number))
\markup { \score-sequence #(fancy-format #f "address@hidden" sequence-number) }

(-- output --)

GNU LilyPond 2.12.3
Processing `Roman_numeral_count.ly'
Parsing...Roman_numeral_count.ly:8:21: In procedure number->string in
expression (number->string sequence-number):
Roman_numeral_count.ly:8:21: Wrong type argument in position 1: "I"